ci(python): build aarch64 wheels on native ubuntu-24.04-arm#1495
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The auto manylinux container's cross-compile toolchain has had two distinct breakages in a row when building the linux/aarch64 wheel: - v0.2.0: aws-lc-sys 0.39.1 required AT_HWCAP2, but the cross sysroot ships glibc 2.17 (manylinux2014) which is missing it. - v0.2.1: after switching rustls to ring (#1493) to drop aws-lc-sys, ring's aarch64 .S assembler fails with `ARM assembler must define __ARM_ARCH` because the cross gcc doesn't predefine it. Both are cross-compile-toolchain gaps, not bugs in our code or the crypto crates. Building the aarch64 wheels on a native arm64 runner sidesteps the entire class -- maturin sees host==target and never involves the cross gcc. publish-js.yml already uses ubuntu-24.04-arm for its aarch64 NAPI binding (see specs/release-process.md JS native binding matrix). Apply the same fix to both linux/aarch64 wheel rows -- manylinux auto and musllinux_1_1.
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| Status | Name | Latest Commit | Preview URL | Updated (UTC) |
|---|---|---|---|---|
| ✅ Deployment successful! View logs |
bashkit | 462d577 | Commit Preview URL Branch Preview URL |
Apr 30 2026, 05:59 PM |
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Summary
Build aarch64 Python wheels on a native
ubuntu-24.04-armrunner instead of cross-compiling from x86_64 inside the manylinux container.The cross-compile path has now broken our publish twice in a row, each time on a different transitive C dep:
aws-lc-sys 0.39.1referencesAT_HWCAP2, missing from the manylinux2014 cross sysroot's glibc 2.17 headers.aws-lc-sys, and ring's aarch64.Sfiles now fail to compile witherror: ARM assembler must define __ARM_ARCHbecause the crossaarch64-linux-gnu-gccdoesn't predefine the macro.Both are cross-compile-toolchain gaps, not bugs in our code or the crypto crates. The clean fix is to build natively: maturin sees
host == targetand never involves the cross gcc.publish-js.ymlalready usesubuntu-24.04-armfor its aarch64 NAPI binding (see the JS native binding matrix inspecs/release-process.md); this brings the Python wheel build in line.Change
- os: linux target: aarch64 - runs-on: ubuntu-latest + runs-on: ubuntu-24.04-arm - os: linux target: aarch64 manylinux: musllinux_1_1 - runs-on: ubuntu-latest + runs-on: ubuntu-24.04-armCommit message has the full background.
Test plan
workflow_dispatchpublish-python.ymlagainstmain. The workflow checks out main whereCargo.tomlis already at0.2.1, so the wheels built will bebashkit-0.2.1-*.whl. PyPI trusted publishing then uploads v0.2.1.pip index versions bashkitshows0.2.1Generated by Claude Code